Which parts fail
Components named in complaints (doors, hood, frame, rust, paint and trim).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 1999 Hyundai Sonata owners, lightly cleaned up (personal details are redacted by NHTSA).
Tl* the contact owns a 1999 Hyundai Sonata gls. While making a left turn at a traffic light, the front passenger side suspension separated from the vehicle. The vehicle was towed to an independent mechanic. The vehicle was included in NHTSA action number: ea08016 (structure, suspension). The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 150,000.
While driving my 1999 Hyundai Sonata( VIN# kmhwf35v5xa04162) on south avenue in staten island the passenger side front wheel fell off.dealer said the cause was cracked k frame, then later upon asking for damage estimat said that it was due to bent k frame. Since there was no accident involved decided to take car to my own mechanic. Upon examination he showed methat the k frame was neither cracke nor bent, it was simply rusted throughout and the wheel assembly just fell off when the rust could no longer hold it to the frame.caleed back both deale and corporate Hyundai not only for redress but also to examine for defect that could resulting injury to others in similar situation. Their response was that the car was not under warrant for the k frame and that any problem whether due to rot, rust, or otherwise was not their responsibility. …
My son was driving home from the local pizza shop when he noticed the car was making a strange noise. He asked me to look at it, so, I took it for a short ride around the block. I was halfway around the block, moving at a speed under 5 MPH, when a loud grinding and pounding noise occurred. Something serious enough to disable the vehicle had happened. I got out and saw the right front wheel was pointed outward, and had settled back against the wheel well. Thank god he wasn't on the highway when this occurred. I had it towed to the local service station where it was diagnosed with a rotted out sub frame. This vehicle shows no signs of rot or rust. Certainly nothing that would prompt an inspection of this part. Yet, there were practically no warning signs of how extremely dangerous it was to operate the vehicle. …
While driving the vehicle, there was a loud thump and it began pulling severely to the right. I drove it straight to my mechanic. He told me that there was a problem with the frames on Hyundai Sonata vehicles, and that mine exhibited the same kind of problems that others had reported. He said I was lucky I was not traveling on a freeway, as I could have lost control of the vehicle. The frame was badly rusted and. In his words, "the frame was so bad I could not get bolts out of control arm, had to cut frame apart and press out bushings, replace sway link." the control arm was barely attached after the frame failed. He replaced the complete crossmember assembly (part #'s 62405-38101, 54561-38000, 265-2197) and suggested I follow up with Hyundai, since this was a common problem. The repairs were finished on 7/2/2008. …
On 1 oct 2009 my son was driving his 1999 Hyundai Sonata gls from his high school to pick up his sister at the daycare just down the road. Upon pulling into the daycare parking lot he heard a loud sound and the front passenger side of the vehicle dropped significantly. He immediately stopped the vehicle and got out to see if he had hit something or to see exactly what had happened. Upon inspection the front passenger side a-frame had completely rusted out of the sub frame of the vehicle causing it to break completely off. Thankfully he was traveling at a low rate of speed or it could have caused a major accident or even further damage to the vehicle. …
One night about 10 days ago I heard a crunching sound when I drove my 1999 Hyundai Sonata over a small bump where is a couple hundred feet away from home. Then the next day the steeling wheel suddenly tilted 45 degree left while I was trying to keep the car going straight. When I stop the car and check, both the front tires were out of position, especially the right front one whose bottom is pulled outward and upper inward. I brought the car to a mechanic and when they lift the car to check the control arms we were all shocked to see a huge rusting hole on the right front subframe under engine cradle, while the left side subframe seemed intact. It was almost broken and the mechanics told me that they never seen anything like that in 20+ years of service and even the body shops is doubtfully can fix that. So I called local Hyundai dealer in centerville, oh for an appointment. …
The car (1999 Sonata gls v6) had a front end alignment done by sears July 6, 2008 at kenosha wi. The failure occurred (July 14, 2008) when the car was being driven into the hospital parking garage (waukegan illinois). The car speed was 5 MPH when it made a grinding sound and jolted to a stop. Sparks from under the car were witnessed by security guard who it reported to the driver of car. The car would not start and had to be pushed out of road to prevent blocking traffic. Inspection of the vehicle showed the subframe broke from corrosion causing the engine to drop then breaking the axle shaft. The car would not start and had to towed back to home by aaa. Currently have complaint at Hyundai dealer where car was purchased. Working with Hyundai service manager who states first he has heard of it. The auto technician employed at the shop states is a common item. …
Vehicle had developed a front end alignment problem, and I scheduled an alignment. The morning before the scheduled alignment, I was pulling out of my driveway to go to work when the right inner cv joint disintegrated. Investigation revealed severe subframe corrosion resulting in the control arm mount separating from the subframe, causing the cv joint to fail and the vehicle to become inoperable. NHTSA and Hyundai issued a recall in 2009, campaign id number: 09V124000. However, the state I reside in (nebraska) is not listed as a "salt belt" state and is not covered by the recall. Nebraska does indeed use salt on the roads, and the description of the fault and potential results matches exactly with the rust and corrosion on my vehicle's subframe and the results. …
1999 Hyundai Sonata gls. Car felt like it was hydroplaning without it raining or snowing. Felt like it the steering was out of control. Noticed that right tire was sticking out of the well so I went to have the front tires replaced and aligned. While replacing front tires the mechanic noticed that the tires bend inward. They could not do the alignment as he felt something was broken on the frame. Referred to an auto body shop. The mechanic informed that the subframe had holes throughout due to rust and rot. He has seen this before with the same make, model, and year of the car. The car is completely unsafe to drive and was informed that the wheels or engine could fall out at anytime. Also informed that a subframe should not rust or rot. I researched online and found that numerous complaints have been made due to this subframe issue. …
When changing the oil on 1999 hyundia Sonata gls notice dlarge rust holes on the subframe structure, and it was on the passenger side. This subframe is the engine cradle and also connects to the suspension. The hole was large and completely rusted through the part. There is a creaking in the front end when hitting a bump as well. I took it to the dealer the next day and they advised me to replace the part as soon as possible, part-$1400, labor-$600-700. They said it was out of warranty, and that hyundia would not cover it. Also, they also they never have seen this before. I then contacted consumer affairs at hyundia and they contacted the dealer for information on the issue, and they said that the car was way past warranty and that it would not be covered. I asked if this has ever been noted before, and he said they have no record of this failure. …
NHTSA investigations
Front sub-frame corrosion
The office of defects investigation (odi) opened preliminary evaluation, pe08-029, on April 22, 2008, based on 40 consumer complaints alleging front sub-frame corrosion in model year (my) 1999 through 2002 Hyundai sonata vehicles.complaints describe severe corrosion of the vehicle sub-frame in the area where the right-front lower control arm is attached.in some vehicles, sub-frame corrosion has caused complete or…
Front sub-frame corrosion
In a letter dated April 14, 2009, Hyundai-Kia America technical center, inc (Hyundai) notified NHTSA that hyundaiis conducting a safety recall of model year (my) 1999 through 2004 Hyundai sonata vehicles manufactured prior to November 20, 2003 that are registered and operated in the following salt belt states and the district of columbia: connecticut, delaware, illinois, indiana, iowa, maine, maryland,…
Body complaints in other Sonata years
Frequently asked questions
How common are body problems on the 1999 Hyundai Sonata?
NHTSA has 71 complaints about the body & structure of the 1999 Hyundai Sonata, 42% of the model year's 170 complaints. The component named most often is frame and members (54 mentions).
Is there a recall for 1999 Hyundai Sonata body problems?
No. NHTSA lists no body & structure recall for the 1999 Hyundai Sonata, though it has 4 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 1999 Hyundai Sonata body problems start?
Half of the complaints with a recorded mileage happened before about 109,000 miles.
Is it dangerous?
Owners linked 1 crash, 0 fires and 3 injuries to body & structure problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.